HP Designjet 4520 Printer series - Manual (Page 104)

8. Using the blue handle, gently disengage the printhead.
9. Gently pull the blue handle upward until the printhead is released from the carriage.
CAUTION: Do not pull abruptly because this can damage the printhead.
10. The front panel display identifies the missing printhead.
Insert a printhead
1. If the printhead is new:
a. Remove the blue protective cap by pulling down on it.
94 Chapter 9 How do I... (ink system topics) ENWW
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